Best Upgrades for Speed......

[o645oRider]

hello, got a few questions for anyone and everyone. I have a 2005 400ex. Im looking to make it alittle faster and quicker. I dont want to do a big bore kit, mainley because there is nobody around me that can do the install for me, and i dont know enough to do so.

I want to know what are the best and most effective mods to increace speed and qucikness. I want to beable to come out of corners faster to gain speed for a small track we have in the yard.

I have now a slip on exhaust from DMC, its the afterburner kit.

what else should i do to it.


i was considering a REV box, and some other small stuff....


what would you reccomend?

[MR.BIG]

A cheap mod if you already didn't do it is pull the airbox lid off or drill holes through it and rejet it. This will give you a decent increase in power.

[underpowered]

a stock bore high comp piston, a cam, port work, a bigger carb or even removing the choke on your carb will all give you a gain.

[curious george]

i would do the rev kit for alot of power gains all around. the white bros. is the best i have seen it has a more aggresive power curve and is cheap. like $40.00. i have one and an exhaust and ilove it.

[miller821]

Sprocket...

[speedracer13t]

TC woods cam does wonders.

[SHADETREE101]

gear the bike down. 14 tooth front, either use the timing advance key, or rev box. not both. open you air box and re-je thte carb. remove the choke plate in the carb.

[goinnukinfutz09]

I'd change your sprocket, get a rev box and drill holes in your lid, like everyone else said. Those were some of the first minor things i did on my quad. Next, possibly go for a bigger carb hence a 450 carb. Lastly look on ebay for things, you can find some great deals if you know what your looking for.

[BORY]

what does removing the choke do and how do u do it?

[WickedATVer]

thats been discused already it lets the air flow straighter through your carb and go under articles on this site and it tells every thing.